Change health check (#15988)

config/initializers/health_check.rb

@@ -1,8 +0,0 @@
-HealthCheck.setup do |config|
-  config.uri = 'health'
-
-  config.standard_checks = %w(database migrations cache)
-  config.full_checks = %w(database migrations cache)
-  
-  config.include_error_in_response_body = false
-end

config/routes.rb

@@ -10,7 +10,7 @@ Rails.application.routes.draw do
 
   mount LetterOpenerWeb::Engine, at: 'letter_opener' if Rails.env.development?
 
-  health_check_routes
+  get 'health', to: 'health#show'
 
   authenticate :user, lambda { |u| u.admin? } do
     mount Sidekiq::Web, at: 'sidekiq', as: :sidekiq